Destruction mechanism of Hg0.8Cd0.2Te induced by high power pulsed TEA-CO2 laser

cai hu; cheng zu-hai; zhu hai-hong; zuo du-luo

Volume 18 Issue 06

Jun. 2006

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Article Navigation > High Power Laser and Particle Beams > 2006 > 18(06): 0-

bei hua, dai dong-dong, dai zhi-min. Simulation of Smith-Purcell radiation from compact terahertz source[J]. High Power Laser and Particle Beams, 2008, 20.

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cai hu, cheng zu-hai, zhu hai-hong, et al. Destruction mechanism of Hg0.8Cd0.2Te induced by high power pulsed TEA-CO2 laser[J]. High Power Laser and Particle Beams, 2006, 18.

bei hua, dai dong-dong, dai zhi-min. Simulation of Smith-Purcell radiation from compact terahertz source[J]. High Power Laser and Particle Beams, 2008, 20.

Citation:

cai hu, cheng zu-hai, zhu hai-hong, et al. Destruction mechanism of Hg0.8Cd0.2Te induced by high power pulsed TEA-CO2 laser[J]. High Power Laser and Particle Beams, 2006, 18.

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Destruction mechanism of Hg0.8Cd0.2Te induced by high power pulsed TEA-CO2 laser

1.
State Key Laboratory of Laser Technology,Huazhong University of Science and Technology,Wuhan 430074,China

Publish Date: 2006-06-15

Abstract

Abstract

The surfaces of HgCdTe plates irradiated by one pulse of TEA-CO2 laser with 37.5 J and energy density of 937.5 J/cm2 are examined by an optical microscope. After laser irradiation, there are large numbers of cracks and much trace of melting in the surface of the plate, and the cracks extending in (111) are the densest in laser irradiation zone. With the increase of the action number of laser pulses at repetition rate of 1 Hz, the melting is more serious, and the numbers, depth and breadth of cracks are all increased. Analyses show the destruction of HgCdTe plates is related with laser energy, action number of laser pulses at repetition rate of 1 Hz, laser field intensity, thermal stress, laser supported combustion wave and evaporation wave.
- tea-co2 pulse laser,
- hgcdte,
- crack,
- destruction mechanism

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